Semmanangur is a village in Ulundurpettai tehsil in district of Viluppuram, Tamil Nadu, India. As per the data provided by Census of India in 2011, total population of Semmanangur was 2,791 which includes 1,427 males and 1,364 females. Semmanangur covers 508.13 ha area. Pincode of Semmanangur is 606107.